Iron ore sintering device and method with coke replaced with biomass charcoal based on fuel layering and flue gas circulating

Abstract

The invention relates to an iron ore sintering device and method with coke replaced with biomass charcoal based on fuel layering and flue gas circulating, and belongs to the technical field of the iron and steel industry. The iron ore sintering device with the coke replaced with the biomass charcoal based on fuel layering and flue gas circulating comprises a sintering machine body, a mixing tank,an ignition furnace, a holding furnace, air bellows, a mixed flue gas circulating pipeline, a mixed flue gas circulating fan, a mixed flue gas dust removal device, a sintered ore cooling waste gas pipeline, a circulating flue gas pipeline, a sintering trolley, a large flue, a large flue dust removal desulfurizer, a large flue fan, a chimney and a sintering furnace. By means of the device and method, the biomass charcoal is adopted for replacing the coke, and reduction of fossil fuel consumption, utilization of flue gas waste heat, enrichment of SO2 in flue gas and reduction of the flue gas discharge amount can be achieved.

Description

technical field [0001] The invention relates to an iron ore sintering device and method for replacing coke with biomass charcoal based on fuel stratification and flue gas circulation, and belongs to the technical field of iron and steel industry. Background technique [0002] my country's iron and steel industry has developed rapidly in recent years, and its output accounts for a large proportion of the world's total output. However, the energy consumption and emission levels in the iron and steel production process are more than 19% higher than the world average. Among them, the iron ore sintering process ranks second in energy consumption and first in emissions in the production process of iron and steel enterprises in my country, and has great potential for energy saving and emission reduction. In addition, with the depletion of global fossil energy, the voice of using renewable energy to replace fossil energy is increasing. Further strengthening the development and use o...

AI Technical Summary

Problems solved by technology

The fuel used in this invention patent is still primary energy-coke, and the fuel in the entire sintered material layer is evenly arranged. Due to the heat storage characteristics of the sintered material layer, the upper material layer is under-burned, the lower material layer is over-burned and the ore is returned. The unfavorable effect of excessive sintering rate reduces the yield and quality of sintered ore

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